National Tube Works Company;
MANUFACTURERS OF WROUGHT IRON LAP-WELDED
BOILER TUBES AND PIPE,
FOR STEAM, WATER AND GAS.
ALSO,
DRY PIPE, CASING, TUBING AND SPECIAL PIPE FOR CONDUCTING WATER LONG
DISTANCES.
CONVERSE'S PATENT LOCK-JOINT FOR WATER AND GAS MAINS.
SOLE MANUFACTURERS OF THE
National Semi-Steel Locomotive Boiler Tube
AND
Mack's Locomotive Injector.
OFFICES:
Chicago, Ill.,
159 and 161 Lake Street.
BOSTON, NEW YORK, PHILADELPHIA, PITTSBURGH, McKEESPORT, BRADFORD, PA.
RAILROAD AND BUSINESS DESKS
A SPECIALTY.